Hypoxia does not uniformly facilitate the release of multiple transmitters from the carotid body.

Hypoxia does not uniformly facilitate the release of multiple transmitters from the carotid body.
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缺氧并不能统一促进颈动脉体释放多种递质。

DOI:
10.1007/978-1-4419-9280-2_38
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发表时间:
2003
影响因子:
--
通讯作者:
Kumar,GaneshK
Kumar,GaneshK
中科院分区:
医学4区
文献类型:
--
作者:
Kim,Dong-Kyu;Summers,BethA;Prabhakar,NanduriR;Kumar,GaneshK

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来自不同物种的研究已经确定,I型细胞(颈动脉体(CB)的推定氧感测元件)表达多种常规神经递质如乙酰胆碱(ACh)、多巴胺(DA)和神经肽以及非常规神经递质如NO和CO [最近的综述参见,(Prabhakar 2000; Kumar and Prabhakar 2002)]。CB对缺氧的感觉反应的起始中的重要步骤涉及从I型细胞释放一种或多种神经递质到并置的感觉神经末梢上(Prabhakar 2000)。从神经递质释放的直接测量,已经表明缺氧促进兔CB中DA(Fidoneet al.1982; Bairamet al.1996; Chenet al.2000)和P物质(Kimet al.2001)的释放。另一方面,缺氧促进猫CB中的ACh释放(Fitzgeraldet等人,1999年)。然而,它还没有被确定的同时监测几个发射器是否缺氧在一个给定的物种引起释放的多个或只有一个子集的发射器在CB。
Studies from diverse species have established that type I cell, the putative oxygen sensing element of the carotid body (CB), expresses a variety of conventional neurotransmitters like acetylcholine (ACh), dopamine (DA), and neuropeptides and unconventional neurotransmitters like NO and CO [for recent reviews see, (Prabhakar 2000; Kumar and Prabhakar 2002)]. An essential step in the initiation of the sensory response of the CB to hypoxia involves the release of one or more of neurotransmitters from type I cells onto apposed sensory nerve endings (Prabhakar 2000). From direct measurement of neurotransmitter release, it has been shown that hypoxia facilitates the release of both DA (Fidoneet al.1982; Bairamet al.1996; Chenet al.2000), and substance P (Kimet al.2001) in the rabbit CB. On the other hand, hypoxia facilitates ACh release in the cat CB (Fitzgeraldet al.1999). However, it has not yet been determined by simultaneous monitoring of several transmitters whether hypoxia in a given species evokes the release of multiple or only a subset of transmitters in the CB.
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